Constraining the Dark Universe

Rachel Bean; Steen H. Hansen; Alessandro Melchiorri

doi:10.1016/S0920-5632(02)01475-5

Constraining the Dark Universe

天体物理学 2015-06-24 v2 高能物理 - 唯象学

作者: Rachel Bean , Steen H. Hansen , Alessandro Melchiorri

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摘要

We combine complementary datasets to constrain dark energy. Using standard Big Bang Nucleosynthesis and the observed abundances of primordial nuclides to put constraints on $\Omega_Q$ at temperatures near $T \sim 1MeV$ , we find the strong constraint $\Omega_Q({MeV}) < 0.045$ at $2\sigma$ c.l.. Under the assumption of flatness, using results from Cosmic Microwave Background (CMB) anisotropy measurements, high redshift supernovae (SN-Ia) observations and data from local cluster abundances we put a new constraint on the equation of state parameter $w_Q < -0.85$ at 68% c.l..

关键词

dark energy constraints dark energy dark matter relic abundance

引用

@article{arxiv.astro-ph/0201127,
  title  = {Constraining the Dark Universe},
  author = {Rachel Bean and Steen H. Hansen and Alessandro Melchiorri},
  journal= {arXiv preprint arXiv:astro-ph/0201127},
  year   = {2015}
}

备注

5 pages, 3 figures, new reference added. To appear in the proceedings of TAUP 2001 (7th international workshop on Topics in Astroparticle and Underground Physics), Sep 2001, Laboratori Nazionali del Gran Sasso, Assergi, Italy

Constraining the Dark Universe

摘要

关键词

引用

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